Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of SUNDAY: SEPTEMBER 21 , 1997
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Average Avg Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 .5 .0 * 51.8 33.4 155
COTTONWOOD CREEK 7600 .3 .0 * 52.4 37.0 142
GRANITE CREEK 6770 .2 .0 * 45.7 37.4 122
GRASSY LAKE 7265 .0 .0 100* 76.3 55.1 138
GROS VENTRE SUMMIT 8775 .1 .0 * 35.0 25.3 138
LEWIS LAKE DIVIDE 7860 .0 .0 100* 76.3 56.1 136
PHILLIPS BENCH 8200 .1 .0 * 65.5 44.2 148
SALT RIVER SUMMIT 7600 -M .0 * 39.3 26.9 146
SNAKE RIVER STATION 6920 .0 .0 100* 53.6 38.7 139
SPRING CREEK DIVIDE 9000 .0 .0 100* 46.5 39.6 117
THUMB DIVIDE 7980 .0 .0 100* 49.0 31.3 157
TOGWOTEE PASS 9580 .2 .0 * 56.7 42.1 135
TWO OCEAN PLATEAU 9360 .1 .0 * 63.4 46.1 138
WILLOW CREEK 8450 .4 .0 * 71.0 47.4 150
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Basin wide percent of average * 140
UPPER YELLOWSTONE-MADISON
BEARTOOTH LAKE 9275 .0 .2 0* 45.2 32.4 140
BLACK BEAR 7950 .0 .2 0* 88.9 60.7 146
CANYON 7940 .0 .0 100* 37.2 26.9 138
FISHER CREEK 9100 .1 .2 50* 74.9 58.0 129
MADISON PLATEAU 7750 .1 .1 100* 57.3 41.9 137
NORTHEAST ENTRANCE 7350 .1 .0 * 36.3 24.5 148
PARKER PEAK 9400 .2 .3 67* 38.9 30.9 126
SYLVAN LAKE 8420 .1 .3 33* 51.2 36.4 141
THUMB DIVIDE 7980 .0 .0 100* 49.0 31.3 157
TWO OCEAN PLATEAU 9360 .1 .0 * 63.4 46.1 138
WHISKEY CREEK 6800 .2 .0 * 45.1 35.9 126
WHITE MILL 8700 .2 .1 200* 59.2 46.2 128
WOLVERINE 7650 .0 .0 100* 28.7 26.0 110
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Basin wide percent of average 50* 136
WIND RIVER
BURROUGHS CREEK 8750 .1 .0 * 41.3 29.0 142
CHRISTINA LAKE 9980 -M .2 * -M 30.4 *
COLD SPRINGS 9630 .3 .0 * 27.6 22.4 123
HOBBS PARK 10100 .1 .1 100* 27.7 27.8 100
LITTLE WARM 9620 .0 .0 100* 36.9 26.3 140
SOUTH PASS 9040 .1 .1 100* 35.0 30.5 115
ST. LAWRENCE ALT 8620 .0 .0 100* 25.0 20.4 123
TOGWOTEE PASS 9580 .2 .0 * 56.7 42.1 135
TOWNSEND CREEK 8700 .0 .0 100* 27.1 24.8 109
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Basin wide percent of average 100* 124
BIGHORN BASIN
BALD MTN. 9375 .1 .2 50* 37.5 32.4 116
BEAR TRAP MEADOW 7900 .0 .0 100* 25.4 20.2 126
BLACKWATER 9780 .0 .3 0* 49.1 36.4 135
BONE SPRINGS DIV 9350 .1 .3 33* 34.1 31.3 109
EVENING STAR 9200 .0 .2 0* 60.4 43.8 138
GRAVE SPRINGS 8550 .1 -M * 25.4 23.6 108
KIRWIN 9550 .1 .1 100* 33.9 25.5 133
LOST CREEK 8080 -M .1 * -M 25.6 *
MARQUETTE 8760 .4 .1 400* 30.5 25.4 120
MIDDLE POWDER 7760 .2 .1 200* 32.3 25.2 128
OWL CREEK 8975 .0 .1 0* 19.4 16.7 116
POWDER RIVER PASS 9480 .3 .1 300* 35.9 25.0 144
SHELL CREEK 9580 .1 .3 33* 29.0 27.8 104
SYLVAN LAKE 8420 .1 .3 33* 51.2 36.4 141
SYLVAN ROAD 8120 .1 .1 100* 40.2 31.6 127
TIMBER CREEK 7950 -M .0 * 22.7 20.5 111
YOUNTS PEAK 8350 .0 .1 0* 43.9 30.6 143
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Basin wide percent of average 65* 126
SHOSHONE RIVER
BLACKWATER 9780 .0 .3 0* 49.1 36.4 135
EVENING STAR 9200 .0 .2 0* 60.4 43.8 138
KIRWIN 9550 .1 .1 100* 33.9 25.5 133
MARQUETTE 8760 .4 .1 400* 30.5 25.4 120
SYLVAN LAKE 8420 .1 .3 33* 51.2 36.4 141
SYLVAN ROAD 8120 .1 .1 100* 40.2 31.6 127
YOUNTS PEAK 8350 .0 .1 0* 43.9 30.6 143
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Basin wide percent of average 58* 135
POWDER-TONGUE
BEAR TRAP MEADOW 7900 .0 .0 100* 25.4 20.2 126
BONE SPRINGS DIV 9350 .1 .3 33* 34.1 31.3 109
BURGESS JUNCTION 7880 .0 .1 0* 30.0 24.6 122
CLOUD PEAK RESERVOIR 9860 .0 .1 0* 37.0 29.5 125
DOME LAKE 8880 .1 .1 100* 32.9 27.4 120
GRAVE SPRINGS 8550 .1 -M * 25.4 23.6 108
HANSEN SAWMILL 8760 .0 .0 100* 27.2 20.2 135
LOST CREEK 8080 -M .1 * -M 25.6 *
MIDDLE POWDER 7760 .2 .1 200* 32.3 25.2 128
POWDER RIVER PASS 9480 .3 .1 300* 35.9 25.0 144
SUCKER CREEK 8880 .1 .1 100* 33.5 28.3 118
TIE CREEK 6870 .0 -M * 34.8 23.6 147
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Basin wide percent of average 89* 125
BELLE FOURCHE
BLIND PARK 6890 .4 .0 * 32.2 27.9 115
NORTH RAPID CREEK 6130 .5 -M * 37.8 -M *
WARREN PEAK 6520 -M .0 * -M 21.5 *
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Basin wide percent of average * 115*
UPPER N. PLATTE RIVER
COLUMBINE 9400 .0 .0 100* -M 36.7 *
DIVIDE PEAK 8800 .0 .0 100* 38.7 36.9 105
ELK RIVER 8700 .0 .0 100* -M 30.5 *
JOE WRIGHT 10120 .0 .0 100* 50.3 44.9 112
NORTH FRENCH CREEK 10100 .2 .0 * 49.1 39.5 124
OLD BATTLE 10000 .2 .2 100* 58.3 47.3 123
SOUTH BRUSH CREEK 8400 .2 .0 * 32.3 30.5 106
TOWER 10500 .0 .0 100* -M 57.8 *
WEBBER SPRINGS 9200 .0 .0 100* 51.7 40.7 127
WILLOW CREEK PASS 9540 .0 .0 100* 32.7 25.6 128
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Basin wide percent of average 100* 118
LOWER N. PLATTE - SWEETWATER - LARAMIE
BROOKLYN LAKE 10240 .0 .1 0* 46.5 33.5 139
CASPER MTN. 7900 .1 .0 * 33.3 29.3 114
CHRISTINA LAKE 9980 -M .2 * -M 30.4 *
DEADMAN HILL 10220 .1 .0 * 36.9 32.1 115
LAPRELE CREEK 8320 .0 .0 100* 27.3 24.8 110
RENO HILL 8400 .1 .0 * 33.2 30.3 110
ROACH 9700 .0 .0 100* -M 37.2 *
SAND LAKE 10080 .1 .0 * 48.2 34.9 138
SOUTH PASS 9040 .1 .1 100* 35.0 30.5 115
WINDY PEAK 7840 .3 .0 * 24.5 21.6 113
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Basin wide percent of average 50* 120
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 .3 .0 * 22.7 25.6 89
DIVIDE PEAK 8800 .0 .0 100* 38.7 36.9 105
OLD BATTLE 10000 .2 .2 100* 58.3 47.3 123
SANDSTONE RS 8150 .0 .0 100* 35.4 32.6 109
WHISKEY PARK 8950 .0 .0 100* -M 44.2 *
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Basin wide percent of average 100* 109
UPPER GREEN RIVER
BIG SANDY OPENING 9100 .0 .0 100* 26.4 25.9 102
BLIND BULL SUM 8650 1.2 .0 * 50.2 34.5 146
EAST RIM DIVIDE 7930 .2 .0 * 29.8 24.1 124
ELKHART PARK G.S. 9400 .0 .0 100* 33.6 25.4 132
GROS VENTRE SUMMIT 8775 .1 .0 * 35.0 25.3 138
KENDALL R.S. 7740 .1 .0 * 36.6 24.7 148
LOOMIS PARK 8240 .1 .0 * 44.8 30.0 149
NEW FORK LAKE 8340 .0 .0 100* 26.1 23.0 113
SNIDER BASIN 8250 .2 .0 * 27.4 24.1 114
SPRING CREEK DIVIDE 9000 .0 .0 100* 46.5 39.6 117
TRIPLE PEAK 8500 .2 .0 * 56.3 46.5 121
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Basin wide percent of average * 128
LOWER GREEN RIVER
HAMS FORK 7840 .7 .0 * 25.6 21.3 120
HEWINTA 9500 .2 .0 * 29.0 25.4 114
HICKERSON PARK 9150 .0 .0 100* 21.3 21.4 100
HOLE-IN-ROCK 9150 .0 .0 100* 22.5 21.4 105
INDIAN CREEK 9425 -M .0 * 44.7 38.5 116
KELLEY R.S. 8180 .9 .0 * -M 29.9 *
STEEL CREEK PARK 10100 .0 .2 0* 29.3 29.8 98
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Basin wide percent of average 0* 109
UPPER BEAR RIVER
BUG LAKE 7950 .1 .1 100* 44.9 29.4 153
HAYDEN FORK 9400 .0 .0 100* 42.8 33.0 130
KELLEY R.S. 8180 .9 .0 * -M 29.9 *
LILY LAKE 9050 .5 .1 500* 33.4 27.3 122
MONTE CRISTO 8960 .8 .1 800* 52.8 39.7 133
SALT RIVER SUMMIT 7600 -M .0 * 39.3 26.9 146
TRIAL LAKE 9960 .5 .1 500* 50.7 39.0 130
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Basin wide percent of average 475* 135
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-M = Missing data
* = Data may not provide a valid measure of conditions.
If the Basin wide percent of average value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Average represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the average value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the average value for those sites on this day.
Contact your state water supply staff for assistance.
Reference period for average conditions is 1961-90.
Provisional data, subject to revision.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.